\begin{tikzpicture}
  % \draw[style=help lines] (0,0) grid +(10cm,-10cm);
  \draw[very thick,latex-] (0,0) -- +(0,-10cm);
  \draw[very thick,-latex] (-0.2cm,-9.2cm) -- +(10cm,0);
%%% --------------------------------------------------
  \newdimen\y                   %spacing
  \newdimen\x                   %gap between axis and bar
  \newdimen\xe                   %end of bar
  %   start = \y, -\x, end
  \y=1cm
  \x=0.2cm
  \xe=5cm
  \aSimpleBar[\mycola!40]{\x}{-\y}{5cm}{\texttt{chrome[pid=1234] 23\%}}
  \aSimpleBar{\x}{-2\y}{7cm}{\texttt{node[pid=1234] 45\%}}
%%% --------------------------------------------------
\end{tikzpicture}


% Local Variables:
% TeX-engine: luatex
% TeX-command-extra-options: "-shell-escape"
% TeX-master: "../report.tex"
% TeX-parse-self: t
% TeX-auto-save: t
% End: